Patents
US 8791052 B2: Wide electrical conductor having high C-axis strength
- Granted
- 2014-07-29
- Filed
- 2012-03-30 application 13435156
- Type
- Utility · 14 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A rotating machine includes a stator and a rotor configured to rotate within the stator. Rotor windings are supported in the rotor and are formed of a laminated electrical conductor in a single-layer saddle coil configuration. The conductor includes a first support lamina, a second support lamina, an insert including a high temperature superconductor disposed between the first and second support lamina, and a filler material surrounding the insert that bonds the insert to each of the first and second support lamina. At the location between the first support lamina and second support lamina corresponding to the location of the insert, the width dimension of the filler material on each side of the insert is at least 10 percent of a width of the conductor. The conductor is configured to carry at least 600 Amperes per turn and have a C-axis tensile strength of at least 21 MPa.
Source: PVGPATDIS, file of 2026-04-10 (ipg140729.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| American Superconductor Corporation 53 patents | US company or organization | Devens, MA | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Michael A. Tanner | Westborough, MA | 2 | PVGPATDIS, file of 2026-04-10 | |
| Gregory L. Snitchler | Shrewsbury, MA | 6 | PVGPATDIS, file of 2026-04-10 | |
| William L. Carter | Chelmsford, MA | 2 | PVGPATDIS, file of 2026-04-10 | |
| Eric R. Podtburg | Natick, MA | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02K | Dynamo-electric machines | H02K3/04 | PVGPATDIS, file of 2026-04-10 |
| H10N | Electric solid-state devices not otherwise provided for | H10N60/203 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E10/72 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2012-05-23 | Assignment Assignment of assignor's interest | PODTBURG, ERIC R. signed 2012-04-05 SNITCHLER, GREGORY L. signed 2012-04-05 CARTER, WILLIAM L. signed 2012-04-06 TANNER, MICHAEL A. signed 2012-05-14 | AMERICAN SUPERCONDUCTOR CORPORATION DEVENS, MA | 28255/115 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.